It's better to take a couple of days to see the more important fallas. You can visit them at any time. There is also a lot of people watching fallas late in the night. All the fallas are free to see but some of the most important cost an samll fee to get inside the fences where you can visit them without stress.
See the winner of Special section and 1st A, the normal and the child falla. try to visit the falla with the pardoned ninot.
Child fallas are burned at 22h of the day 19. The winner at 23h and the cinty council falla at 23:30h.
Normal fallas are burnt by night at 00h, the winner at 00:30h and the city council falla at 01h. In theory the last being burnt is the city council falla.
In practice there are some other fallas still standing after 00:30h awaiting for the firemen that must be present for the burn of bif fallas or fallas in narrow streets.
That's why you can see burn more fallas after seeing the city council falla burning. There will be some left around the area of Cánovas.
Some big fallas in narrow streets are hard to see being burnt as most of the street is closed.